Name
Title | ||
|---|---|---|
A Comparator With Reduced Delay Time in 65-nm CMOS for Supply Voltages Down to 0.65 V |
Abstract | ||
|---|---|---|
A comparator in a low-power 65-nm complementary metal-oxide-semiconductor process (only standard transistors with threshold voltage Vt ≅ 0.4 V were used) is presented, where the circuit of a conventional latch-type comparator consisting of two cross-coupled inverters is modified for fast operation, even with 0.6 GHz at a low supply voltage of 0.65 V. The advantages of a high-impedance input, rail-to-rail output swing, robustness against the influence of mismatch, and no static power consumption are kept. To achieve a bit error rate of 10-9 at 1.2-V supply, an amplitude at the input of 16.5 mV at 4 GHz has to be applied. If the supply voltage is lowered, 12.1 mV at 0.6 GHz/0.65 V is necessary. The power consumption of the comparator is 2.88 mW at 5 GHz (1.2 V) and 128 µW at 0.6 GHz (0.65 V). Simulations show an offset standard deviation of about 6.1 mV at 0.65-V supply. With an on-chip measurement circuit, the delay time of the comparator of, e.g., 104 ps for 15-mV input amplitude at 1.2-V supply, is obtained. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/TCSII.2009.2030357 | Circuits and Systems II: Express Briefs, IEEE Transactions |
Keywords | Field | DocType |
CMOS analogue integrated circuits,comparators (circuits),delays,power consumption,power supply circuits,CMOS analogue process,bit error rate,comparator,complementary metal-oxide-semiconductor process,cross-coupled inverters,delay time,frequency 0.6 GHz,frequency 4 GHz,frequency 5 GHz,offset standard deviation,on-chip measurement circuit,power 128 muW,power 2.88 mW,size 65 nm,static power consumption,voltage 0.65 V,voltage 1.2 V,voltage 12.1 mV,voltage 16.5 mV,voltage 6.1 mV,Comparator,complementary metal–oxide–semiconductor (CMOS) analog circuits,low supply voltage,modified latch,ultradeep submicrometer (UDSM) CMOS | Comparator,Voltage,Electronic engineering,CMOS,Low voltage,Comparator applications,Electronic circuit,Transistor,Threshold voltage,Electrical engineering,Mathematics | Journal |
Volume | Issue | ISSN |
56 | 11 | 1549-7747 |
Citations | PageRank | References |
11 | 0.97 | 6 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Bernhard Goll | 1 | 15 | 6.08 |
| H. Zimmermann | 2 | 57 | 15.95 |